Sto Corp. announced that its StoGuard fluid-applied air and moisture barrier showed significant air tightness during a recent blower door test.
Corp. announced that its StoGuard fluid-applied air and moisture barrier showed
significant air tightness during a recent blower door test on a project at
Joint Base Lewis-McChord in Washington
October 2009, the United States Army Corps of Engineers created requirements
for building air tightness and building air leakage testing for new and
renovation Army construction projects in or after Fiscal Year 2010. The
testing, in accordance with ASTM E 2178, must demonstrate that the air leakage
rate of the building envelope does not exceed 0.25 cfm/sq ft.
project, which used the StoGuard system, passed with high marks. Where an
acceptable score for the assembly would be 0.25 cfm/square feet, the assembly
scored 0.18 cfm/square feet in initial testing, and 0.11 in final testing-a
difference of 56 percent less air leakage.
building tested, the Special
is part of the larger Joint Base Lewis-McChord Whole Barracks Renewal project.
The barrier system, along with StoGuard Fabric, StoGuard Tape, and StoGuard
Primer, was applied to this building and tested in late July.
Joint Base Lewis-McChord, StoGuard “performed at a level that has not been accomplished
since the USACE requirement for such testing began,” said Benham Hansen, the
ACI-certified-project superintendent. “It is very uncommon after the initial
test to accomplish more than a 0.02 or 0.03 difference for the final test. We
were able to achieve a 0.07 decrease in cfm.”
Engineers Inc., which conducted the testing at Joint Base Lewis-McChord, confirmed
to Hansen in correspondence that the Education
Center is “the
highest-performing building they have ever been associated with.”
was one of the first projects I’ve seen the StoGuard application go on, and it
was one of the better tests I’ve seen,” said Phil Emory, senior project manager
at Neudorfer. “0.11 cfm is extremely low and the results were because of the
StoGuard product and application. This is a sensational building with an
full copy of the test results can be found on the Sto Corp. Web site.
StoGuard Scores High On Air Barrier Testing
September 14, 2010